Topics

Directives

Bugfix checklist

See also

Allow 10 seconds to receive the request including the headers and
30 seconds for receiving the request body:

RequestReadTimeout header=10 body=30

Allow at least 10 seconds to receive the request body.
If the client sends data, increase the timeout by 1 second for every
1000 bytes received, with no upper limit for the timeout (except for
the limit given indirectly by
LimitRequestBody):

RequestReadTimeout body=10,MinRate=1000

Allow at least 10 seconds to receive the request including the headers.
If the client sends data, increase the timeout by 1 second for every
500 bytes received. But do not allow more than 30 seconds for the
request including the headers:

RequestReadTimeout header=10-30,MinRate=500

Usually, a server should have both header and body timeouts configured.
If a common configuration is used for http and https virtual hosts, the
timeouts should not be set too low:

Available in version 2.2.15 and later; defaulted to disabled in
version 2.3.14 and earlier.

This directive can set various timeouts for receiving the request headers
and the request body from the client. If the client fails to send headers or
body within the configured time, a 408 REQUEST TIME OUT error
is sent.

For SSL virtual hosts, the header timeout values include the time needed
to do the initial SSL handshake. If the user's browser is configured to
query certificate revocation lists and the CRL server is not reachable, the
initial SSL handshake may take a significant time until the browser gives up
waiting for the CRL. Therefore the header timeout values should not be set
to very low values for SSL virtual hosts.
The body timeout values include the time needed for SSL renegotiation
(if necessary).

When an AcceptFilter is in use
(usually the case on Linux and FreeBSD), the socket is not sent to the
server process before at least one byte (or the whole request for
httpready) is received. The header timeout configured with
RequestReadTimeout is only effective after the server process has
received the socket.

For each of the two timeout types (header or body), there are three ways
to specify the timeout:

Fixed timeout value:

type=timeout

The time in seconds allowed for reading all of the request headers or
body, respectively. A value of 0 means no limit.

Notice:This is not a Q&A section. Comments placed here should be pointed towards suggestions on improving the documentation or server, and may be removed again by our moderators if they are either implemented or considered invalid/off-topic. Questions on how to manage the Apache HTTP Server should be directed at either our IRC channel, #httpd, on Freenode, or sent to our mailing lists.